Tuesday, January 31, 2012

1108.2987 (V. M. Bastidas et al.)

Nonequilibrium Quantum Phase Transitions in the Dicke Model    [PDF]

V. M. Bastidas, C. Emary, B. Regler, T. Brandes
We establish a set of nonequilibrium quantum phase transitions in the Dicke
model by considering a monochromatic nonadiabatic modulation of the atom-field
coupling. For weak driving the system exhibits a set of sidebands which allow
the circumvention of the no-go theorem which otherwise forbids the occurence of
superradiant phase transitions. At strong driving we show that the system
exhibits a rich multistable structure and exhibits both first- and second-order
nonequilibrium quantum phase transitions.
View original: http://arxiv.org/abs/1108.2987

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